Home / 81,001.38-121,501.05-27,692.82

Finding the Fourth Proportional to 81,001.38, 121,501.05 and 27,692.82

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Solution

The fourth proportional to 81,001.38, 121,501.05 and 27,692.82 is: 41,538.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,001.38 : 121,501.05 = 27,692.82 : x
  2. Step 2: Convert to fraction form
    81,001.38/121,501.05 = 27,692.82/x
  3. Step 3: Cross multiply
    81,001.38x = 121,501.05 × 27,692.82
  4. Step 4: Simplify right side
    81,001.38x = 3,364,706,707.46
  5. Step 5: Solve for x
    x = 3,364,706,707.46/81,001.38
  6. Step 6: Final answer
    x = 41,538.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.